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It has different properties. Depends what is better… Usually it sticks more and is also made to take care of the rubber o-rings on most motorcycle chains, which bike chains don’t have. But I do not think it’s ideal for bearings due to its high viscosity, but I don’t have data on that.

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I have actually found that denatured alcohol is very good at degreasing even some of the toughest grease. I recently repacked drill press bearings and used denatured alcohol in a sonication bath and they came out perfect. 100% actone works well too.

and @Skatardude10 I wouldn’t use an air compressor especially if you ever do it when there is no grease in them. They can explode. Alot of guys on the Old wood Working Machines forum have had that happen to them.

When you clean a bearing of any kind, you want to either dissolve or displace all the old material and the particulate/contaminate trapped in it. Personally I use solvents like mineral spirits over pushing clean grease through because I can see when everything is completely cleaned of dirt and worn out grease rather than just waiting for the new grease to look ‘clean’

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I don’t think it’ll damage it. But yes, thinner lube which yet always has a remaining micro-film even at high speed/temp is better for bearings.

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I pull the shield off and swish them in WD-40, then drop some bike chain lube in the bearing. Usually spin them up with an air compressor so the extra lube gets distributed and flung, the shields get rinsed with water

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It seems like there is no dedicated post on the lubrication of bearings. As winter is coming about I’ll start one for us all to learn.

I do put a lot of 3-in-1 oil on them whenever I install them, whether they are old or new bearings. But I never clean them.

for shielded, not seal motor bearings, I spritz in a couple of drops of motorcycle anti-fling chain lube once a week or so into the motor can.

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Denatured Alcohol in an cheap Ultra-sonic cleaner, amazingly PineSol is an amazing cheap degreaser just don’t leave the bearings in solution forever. and anti-fling motorcycle chain lube are perfect. Yes a little more rolling resistance, but I have never noticed even minor resistance when free-rolling.

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I keep finding my cheap ass china idler bearings tend to last no time when im riding in puddles - I’m really glad @b264 never cleans - I don’t either I feel much better about that now

And I just love lithium grease. I have used it for well over 20 years so far, going between that and regular skate lube like bones speed cream and I keep coming back to lithium grease, I find it keeps my bearings rolling smoother for so much longer. when you say wash out resistance, do you mean like something with low viscosity? Like, mineral oil compared to glops of grease?

after this, I’ve had old 10 year old zealous bearings that felt scratchy, extremely hard to roll, rusted, etc basically come back to live a great life again rolling almost new… and for newer ceramics this basically keeps bearings lasting forever.

I would probably use something with more wash out resistance that lithium grease. Old school guys used to use sewing machine oil.

Typically I will use them until failure. Failure means squeaking, being very stiff, wobbling, or actually falling apart.

I am just using isopropyl alcohol because it’s cheap and readily available. But Denatured Alcohol should be preferable. With acetone I am a bit worried about it attacking plastic/rubber parts.

I tried that, and tried expensive bearings, and I’ve decided that cheaper bearings (like Bones Reds ) and just replacing them when they fail is the best option for me.